//获取cookie、
export function getCookie(name) {
  var arr, reg = new RegExp( "(^| )" + name + "=([^;]*)(;|$)" );
  if (document.cookie.match(reg)!=null){
    arr = document.cookie.match(reg)
    return (arr[2]);
  }else
    return null ;
}
  
//设置cookie,增加到vue实例方便全局调用
export function setCookie (c_name, value, expiredays) {
  var exdate = new Date();
  exdate.setDate(exdate.getDate() + expiredays);
  document.cookie = c_name + "=" + escape(value) + ((expiredays == null ) ? "" : ";expires=" + exdate.toGMTString());
}
  
//删除cookie
export function delCookie (name) {
  var exp = new Date();
  exp.setTime(exp.getTime() - 1);
  var cval = getCookie(name);
  if (cval != null )
    document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString();
}